... Voltage Surges Protection LED Manufacture Cree, Seoul, Edison, EpisarOperating Temperature -30o~+50oLED Lamp Life 50,000 hoursRelevant Certificate ... :Light Color Warm White, White, R,G,B,Y Color Temperature 2800-3000K / 4500-6000K / 7000-9000K Beam AngleBody temperature: Less than 60 degree Celsius 4)LED working temperature: Less than 62 degree Celsius ...